*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}

body {
  background-color: lightblue;
  margin: 5px;
}

header {
  background-color: aqua;
  padding: 1rem;
  text-align: center;
}

footer {
  background-color: aqua;
  padding: 0.25rem;
  text-align: center;
}
hello-wc {
  font-size: 1.5rem;
  color: red;
}

.container {
  border: 4px solid black;
  padding: 0.75rem;
}

.not-found {
  display:grid;
  justify-items: center;
  align-items: center;
  font-size: 2.0rem;
  font-weight:bold;
  color: blue;
  text-align: center;
  border: 2px solid black;
  border-radius: 5px;
}